<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			.box{
				width: 200px;height: 200px;
				background-color: red;
			}
			.black{
				background-color: black;
				color: white;
			}
			.font{
				font-size: 40px;
				color:gold;
			}
			.b{
				font-weight: bold;
			}
		</style>
	</head>
	<body>
		<div class="box font">1</div>
		<div class="box b">2</div>
		<div class="box font">3</div>
		<div class="box b">4</div>
		<div class="box font">5</div>
		<div class="black b">6</div>
	</body>
</html>